from my point of view a sync tool for PIM is essential and a must have for every user. The most important data are calendar, todo, contacts and notes. There are tools to sync calendar and contacts with google, but I can't find a good solution for todos and notes. On my Nokia E6 I use funambol to sync with the now called onemediahub. It works perfect. For the N9 I tried to connect the funambol service via syncevolution. It's okay for calendar and contacts, but todos and notes are still not working.

I think it would be great to have a nice sync tool with a GUI based on syncevolution.